caa a22 4500 445295716 CHVBK 20180317142541.0 cr unu---uuuuu 170323e20100701xx s 000 0 eng 10.1134/S003294521006007X doi (NATIONALLICENCE)springer-10.1134/S003294521006007X Rheoreaction as a mechanism of formation of phenotypic groups of underyearlings of the Atlantic salmon Salmo salar [Elektronische Daten] [D. Pavlov, V. Ponomareva, A. Veselov, V. Kostin] Experimental investigation on rheoreaction as a behavioral mechanism in the formation of phenotypic groups of underyearlings of the Atlantic salmon Salmo salar is performed. Juveniles of the Atlantic salmon are investigated at the age 0+ from the coastal group and from the tributary group in the period of its primary distribution from redds. The underyearlings from the tributary group differ from the coastal fish in increased critical current velocity, the fact that among them the most portion of individuals have a positive type of rheoreacrtion, and the fact that they prefer currents more often. The behavioral mechanism of spatial separation of the spreading juveniles at confluence of two currents is revealed: stronger individuals with the positive type of rheoreaction and the expressed rheopreferendum mainly move against the flow at a higher speed and manage to get into a tributary. The weaker fish with static and negative dynamic types of rheoreaction, having no expressed rheopreferendum, prefer the flow with lower current rate and turn out to be in the coastal zone of the mainstream. Pleiades Publishing, Ltd., 2010 Atlantic salmon nationallicence type of rheoreaction nationallicence underyearlings nationallicence spatial separation nationallicence phenotypic groups nationallicence rheopreferendum nationallicence critical current velocity nationallicence Pavlov D. Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, 119071, Moscow, Russia aut Ponomareva V. Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, 119071, Moscow, Russia aut Veselov A. Institute of Biology, Karelian Research Center, Russian Academy of Sciences, ul. Pushkinskaya 11, 185910, Petrozavodsk, Russia aut Kostin V. Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, 119071, Moscow, Russia aut Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/6(2010-07-01), 483-488 0032-9452 50:6<483 2010 50 11489 https://doi.org/10.1134/S003294521006007X text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S003294521006007X text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pavlov D. Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, 119071, Moscow, Russia aut NATIONALLICENCE 700 1- Ponomareva V. Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, 119071, Moscow, Russia aut NATIONALLICENCE 700 1- Veselov A. Institute of Biology, Karelian Research Center, Russian Academy of Sciences, ul. Pushkinskaya 11, 185910, Petrozavodsk, Russia aut NATIONALLICENCE 700 1- Kostin V. Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, 119071, Moscow, Russia aut NATIONALLICENCE 773 0- Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/6(2010-07-01), 483-488 0032-9452 50:6<483 2010 50 11489 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer